气候变化领域集成服务门户(CCPortal): Radiative closure and cloud effects on the radiation budget based on satellite and shipborne observations during the Arctic summer research cruise, PS106

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DOI	10.5194/acp-22-9313-2022
	Radiative closure and cloud effects on the radiation budget based on satellite and shipborne observations during the Arctic summer research cruise, PS106
	Barrientos-Velasco, Carola; Deneke, Hartwig; Huenerbein, Anja; Griesche, Hannes J.; Seifert, Patric; Macke, Andreas
发表日期	2022
ISSN	1680-7316
EISSN	1680-7324
起始页码	9313
结束页码	9348
卷号	22 期号:14 页码:36
英文摘要	For understanding Arctic climate change, it is critical to quantify and address uncertainties in climate data records on clouds and radiative fluxes derived from long-term passive satellite observations. A unique set of observations collected during the PS106 expedition of the research vessel Polarstern (28 May to 16 July 2017) by the OCEANET facility, is exploited here for this purpose and compared with the CERES SYN1deg ed. 4.1 satellite remote-sensing products. Mean cloud fraction (CF) of 86.7 % for CERES SYN1deg and 76.1 % for OCEANET were found for the entire cruise. The difference of CF between both data sets is due to different spatial resolution and momentary data gaps, which are a result of technical limitations of the set of shipborne instruments. A comparison of radiative fluxes during clear-sky (CS) conditions enables radiative closure (RC) for CERES SYN1deg products by means of independent radiative transfer simulations. Several challenges were encountered to accurately represent clouds in radiative transfer under cloudy conditions, especially for ice-containing clouds and low-level stratus (LLS) clouds. During LLS conditions, the OCEANET retrievals were particularly compromised by the altitude detection limit of 155 m of the cloud radar. Radiative fluxes from CERES SYN1deg show a good agreement with ship observations, having a bias (standard deviation) of -6.0 (14.6) and 23.1 (59.3) W m(-2) for the downward longwave (LWD) and shortwave (SWD) fluxes, respectively. Based on CERES SYN1deg products, mean values of the radiation budget and the cloud radiative effect (CRE) were determined for the PS106 cruise track and the central Arctic region (70-90.N). For the period of study, the results indicate a strong influence of the SW flux in the radiation budget, which is reduced by clouds leading to a net surface CRE of -8.8 and -9.3 W m(-2) along the PS106 cruise and for the entire Arctic, respectively. The similarity of local and regional CRE supports the consideration that the PS106 cloud observations can be representative of Arctic cloudiness during early summer.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000827464500001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273041
作者单位	Leibniz Institut fur Tropospharenforschung (TROPOS)
推荐引用方式 GB/T 7714	Barrientos-Velasco, Carola,Deneke, Hartwig,Huenerbein, Anja,et al. Radiative closure and cloud effects on the radiation budget based on satellite and shipborne observations during the Arctic summer research cruise, PS106[J],2022,22(14):36.
APA	Barrientos-Velasco, Carola,Deneke, Hartwig,Huenerbein, Anja,Griesche, Hannes J.,Seifert, Patric,&Macke, Andreas.(2022).Radiative closure and cloud effects on the radiation budget based on satellite and shipborne observations during the Arctic summer research cruise, PS106.ATMOSPHERIC CHEMISTRY AND PHYSICS,22(14),36.
MLA	Barrientos-Velasco, Carola,et al."Radiative closure and cloud effects on the radiation budget based on satellite and shipborne observations during the Arctic summer research cruise, PS106".ATMOSPHERIC CHEMISTRY AND PHYSICS 22.14(2022):36.